Rose plant

ABSTRACT

A new grandiflora rose variety of Spinel red and Naples yellow bicoloring.

The present invention relates to a new and distinct variety of roseplant of the grandiflora rose class, which was originated by my crossingas seed parent the rose known as "Bob Hope" (U.S. Plant Pat. No. 2,734)and an unpatented, unnamed seedling of my creation as pollen parent. Thedenomination of this new variety is "Risque".

Among the novel characteristics possessed by this new variety whichdistinguish it from it parents and all other varieties of which I amaware are its flowers of Spinel red and Naples yellow bicoloring unusualin a grandiflora rose. Buds are high centered and show bicoloring bestbefore bloom becomes fully open. Flowers are attractively formed andborne on strong stems making the variety useful both as a garden plantand as a cut flower. Asexual reproduction by budding of the new varietyas performed in San Bernardino County, Calif., shows that the foregoingand other distinguishing characteristics come true to form and areestablished and transmitted through succeeding propagations.

The accompanying drawing shows typical specimens of the vegetativegrowth and flowers of the new variety in different stages of developmentand as depicted in color as nearly true as it is reasonably possible tomake the same in a color illustration of this character.

The following is a detailed description of my new variety, with colorterminology in accordance with The Royal Horticultural Society ColourChart (R.H.S.C.C.). The terminology used in color description hereinrefers to plate numbers in the aforementioned color chart, e.g., "54A"is plate 54A of The Royal Horticultural Society Colour Chart.

Parentage: Seedling.

Seed parent.--"Bob Hope".

Pollen parent.--Unnamed seedling.

Class: Grandiflora.

The following observations are made of specimens grown outdoors in SanBernardino County, Calif., during the month of October.

FLOWER

Blooming habit: Recurrent.

A. Bud:

(1) Size.--Medium.

(2) Form.--Short pointed.

(3) Color.--As sepals separate, bud appears spinel red with yellowstriping with more significant yellow coloring at point of petalattachment. After sepals fall, distinct different colors of petal topand undersurfaces become quickly evident.

(4) Sepals.--Short, same length as bud, few fancy and few smooth.

(5) Peduncle.--Length -- long, with small prickles. Aspect -- straight.Strength -- erect, strong. Color -- near 147C, with reddish purple cast.

B. Bloom:

(1) Size.--Average size when fully expanded -- about 4 inches.

(2) Borne.--Singly and several together in sprays.

(3) Form.--High centered, petals reflex upon opening, outer petals quillto points, other petals roll loosely outward.

(4) Petalage.--Number of petals under normal conditions -- about 25 to28.

(5) Color.--After sepals fall, high centered bud to 1/3 open stagedisplays sharp color contrast between spinel red, near 54A, petal topsurface and Naples yellow, near 11A, petal undersurface. Coloring ofpetal top surface tends to be substantial, uniform, and stays the sameas flower matures, but lightens somewhat as blooms age. Color of petalundersurface tends not to be uniform with Naples yellow tonalitydeepening at lower segments of petals and spinel red washing into theNaples yellow coloring at upper segments of the petals. Aged open bloomstend to show some bluing with overall color tending toward near 66C andD and yellow coloring showing only at flower center.

C. Petals:

(1) Texture.--Medium thick.

(2) Appearance.--Crepe-like appearance outside, inside satiny.

(3) Form.--Ovate.

(4) Arrangement.--Regular.

(5) Petaloids in center.--5 to 6.

(6) Persistence.--Drop off cleanly.

(7) Fragrance.--None.

(8) Lasting quality.--Long lasting on plant and as cut flower.

REPRODUCTIVE ORGANS

A. Stamens, filaments and anthers:

Arrangement.--Irregularly arranged around styles, sparse.

B. Pollen: Color -- light yellow.

C. Styles: Uneven, short to medium length.

D. Stigmas: Color -- Yellow.

E. Hips: None observed.

PLANT

A. Form: Upright, tall, compact.

B. Growth: Very vigorous, uniform branching.

Height attained.--about 4 to 41/2 feet.

C. Foliage: Compound 5 leaflets.

(1) Size.--Medium.

(2) Quantity.--Abundant.

(3) Color.--New foliage: Upper side -- reddish purple. Under side --reddish purple. Old foliage: Upper side -- near 147A. Under side -- near147B.

(4) Shape.--Oval, pointed.

(5) Texture.--Upper side is leathery and under side is dull.

(6) Edge.--Serrated.

(7) Serration.--Simple.

(8) Leaf stem.--Color -- near to 147C. Under side -- near 147C.

(9) Stipules.--Short to medium.

(10) Resistance to disease.--Average.

D. Wood:

(1) New wood.--Color -- reddish purple. Bark -- smooth.

(2) Old wood.--Color -- near 148A to B. Bark -- smooth.

E. Thorne:

(1) Thorns.--Quantity (main stalk) -- very few, flat, pointed down,reddish brown.

(2) Prickles.--Small, few.

F. Winter hardiness: Needs winter protection in severe climates.

I claim:
 1. A new and distinct variety of rose plant of the grandiflorarose class, substantially as shown and described, characterizedparticularly by unique Spinel red and Naples yellow bicolor flowers withred petal top surface and yellow petal undersurface.